Homo-polymerizations of DMDL and random copolymerizations of DMDL with co-monomers.
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Entry | Co-monomer (M) | Initiator | Solventa | [M]0/[DMDL]0/[initiator]0 (equiv.) | T (°C) | t (h) | Conv (M/DMDL)b (%/%) | M n c | Đ c | F DMDL d (%) |
1 | None | AIBN | Toluene | 0/100/1 | 70 | 12 | NA/82 | 10 300 | 1.61 | 100 (100) |
2 | None | AIBN | Bulk | 0/100/0.5 | 70 | 1.5 | NA/79 | 104 000 | 2.04 | 100 (100) |
3 | MMA | AIBN | Toluene | 50/50/1 | 70 | 7 | 99/23 | 19 000 | 1.78 | 18 (19) |
4 | BA | AIBN | Toluene | 50/50/1 | 70 | 1 | 98/56 | 130 000 | 1.53 | 37 (36) |
5 | St | AIBN | Toluene | 50/50/2 | 80 | 12 | 79/NAe | 5100 | 1.46 | 8 (NA) |
6 | AN | AIBN | EC | 50/50/1 | 70 | 1 | 80/44 | 77 000 | 1.54 | 34 (35) |
7 | VAc | AIBN | Toluene | 50/50/1 | 70 | 12 | 84/48 | 11 000 | 1.60 | 35 (36) |
8 | NVP | AIBN | DMF | 50/50/1 | 70 | 2 | 96/28 | 29 000 | 1.81 | 19 (23) |
9 | DMA | AIBN | Toluene | 50/50/1 | 70 | 1 | 100/39 | 91 000 | 1.95 | 28 (29) |
10 | PEGMA | V65 | Toluene | 50/50/1 | 60 | 4 | 92/NAe | 39 000 | 2.22 | 17 (NA) |
11 | DMAEMA | AIBN | Toluene | 50/50/1 | 70 | 4 | 98/20 | 27 000 | 1.62 | 17 (17) |
12 | BMA | AIBN | Toluene | 50/50/1 | 70 | 5 | 93/11 | 46 000 | 1.54 | 10 (11) |
13 | LMA | AIBN | Toluene | 50/50/1 | 70 | 3 | 85/15 | 42 000 | 1.76 | 16 (15) |
14 | BzMA | AIBN | Toluene | 50/50/1 | 70 | 3 | 92/26 | 39 000 | 1.76 | 19 (22) |
15 | EHMA | AIBN | Toluene | 50/50/1 | 70 | 2 | 97/18 | 38 000 | 1.95 | 13 (16) |
16 | SMA | AIBN | Toluene | 50/50/1 | 70 | 2 | 77/29 | 86 000 | 1.96 | 28 (27) |
17 | MEA | AIBN | Toluene | 50/50/1 | 70 | 1 | 100/54 | 82 000 | 2.00 | 32 (35) |
Dilution with 50 wt% solvent for entries 1 and 3–17. EC is ethylene carbonate. DMF is N,N-dimethylformamide.
Monomer conversion obtained with 1H NMR.
PMMA-calibrated THF-GPC values for entries 1, 3–5, 7, and 12–17 and PMMA-calibrated DMF-GPC values for entries 2, 6, and 8–11.
F DMDL value determined by the 1H NMR analysis of the purified polymer. In the parenthesis, FDMDL value calculated from the monomer conversions of DMDL and co-monomer determined using 1H NMR is given.
Monomer conversion of DMDL was unable to determine because the DMDL monomer peak overlapped with the co-monomer peak in the 1H NMR spectrum.